[erlang-questions] idea: function meta data
Thu Nov 15 12:23:05 CET 2007
On 15/11/2007, Joe Armstrong <> wrote:
> Module have metadata Mod:module_info(export) etc.
> But functions do not.
> idea - attach function meta data with a new attribute.
> -meta(doc, "the factorial function").
> -meta(type, "int -> int").
> -meta(keywords, [math]).
> fac(0) -> 1;
> fac(N) -> N*fac(N-1)
> The meta data gets *attached* to the Next function in the module
> -meta(process, true).
> foo() -> spawn(fun() -> ... end)
> After compilation meta data can be access as follows:
> Mod:meta_data(fac, 1, doc) => "the factorial function"
I think this will be really useful. I've always wanted a way to
provide help for functions but that usually involves either writing a
function such as <function>_usage()/0 or <function>_help() and hard to
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